On Mon, 2011-06-20 at 12:54 -0700, [email protected] wrote: Hello,
> 0.5 mbyte buffer per port I read in the spec: Buffer memory: 512 KB embedded memory per unit seems global for a switch. That resemble to what I am used to. Usually on chip port buffers are at most 17KB. These devices are tuned for a traffic which is mainly TCP, and UDP with data integrity control delegated to clients. Basically they drop a lot of packets, which is of little importance in usual use, as those packets are requested by the listener and re-emitted. Of course in contention situations this behaviour may impact badly things like voice transportation. In your design, many lines converge to one. Hope the time statistic is fair. The time to be considered to examine this is: buffer_size/effecive_line_speed Be carefull that not all of the buffer memory may be available for one port, depending on the policy adopted in the switching strategy. Jean
